In terms of nutrition,what is the nature of the sporophyte stage in $Bryophytes$?

Bryophytes are called the amphibians of the plant kingdom because

An archegonium of $Riccia$ has:

Which of the following species of a moss provides peat?

Statement-$I$: Bryophytes play an important role in plant succession on bare rocks/soil.
Statement-$II$: Peat moss is used as packing material for trans-shipment of living material because of its capacity to hold water.

Rhizoids in $Riccia$ are